The particle number concentrations of AgNPs were
7.04 × 107 ± 0.42 × 107 and 4.04 × 107 ± 0.11 × 107 partilces/L for
Chendian Lake and Guiyu River respectively, and particle number concentrations
of AuNPs were 6.38 × 107 ± 1.12 × 107 and 6.48 × 107 ±
0.4 × 107 partilces/L for Chendian Lake and Guiyu River respectively.